Coffee-urn.



A No. 755,041.l I

B. PBTERMAN.

COFFEE URN. HLIOA'IICIN FILED MAY 13. 1903.

2 SHEETS-sms; g5

H0 MODEL.

@Heaney UNITED STATES l l. Patented M arch 22, 1904 i l i l Bnn'r PETERMAN, or DICLLAS, TEXAS.

SPECIFICATION forming pm or Letters Patent No. 755,041, daten March 2 2, 1904.

I Application led May 13, 1903. Serial No. 156,968. (No model.)

v.'Z' (LIZ whom, it mag/concern:

Be itknown thatl, BERT PTERMAN, a citizen of the United States, residing at Dall-as, in thc county of Dallas and State of Texas, have invented new and useful Improvements in Coffee-Urns, of which the following is a specification.

My invention relates to'new and useful improvements in pump attachmentsfor coffeeurns by means of which coffee may be circulated through an urn.

. The object of the invention is to'provide a. pump mounted within a suitable casing which may be readily attached to an urn and to the gage ordinarily employed, and this pump is adapted to he turned in any suitable manner to draw. liquid through the gage and discharge it into the top of the urn.

-In the general method of makingeolfee after the boiling water has been poured through Athe coffee-mash -it is drawn off through the 'faucet in a cup or like open utensil and poured back into the urn to p'ass again through the mash, thereby extracting tie full strength of the coiee. This is repeated several times. This process necessitates the removal of the urn`s cover, thereby allowing the escape of considerable steam, which carries with it a great deal of the aroma. By my device the escape of steam is prevented, thereby greatly enhancing the quality of the coffee.

With thev above and other objects in viewthe invention consists in providing a pumpcasing adapted to be attached kin any suitable manner to one end of a gage, and within this casing are revolubly mounted two meshing pistons, adapted to be operated byan arrangement of gears upon the casing. These pistons when turned serve to force liquid upward through an outlet in the casing. and a discharge-pipe is connected to this outlet'and opens through the upper portion of the urn. A vent is provided within the casing, so is to permit theI admission of air, whereby when it j is desired the liquid within the gage can be returned to its natural level.

The invention ulsoconsists m the novel con- -struction and arrangement of parts hereinafter more lfully described and claimed, and

showing my improved pump attachment in4 elevation. Fig. 2 is ari-enlarged vertical sec- -tion through the pump. Fig. 3 is section on line 3 3, Fig. 2; and Fig. 4 is a section on line 'L 4, F ig. 2.

Referring to the drawings by numerals of reference, 1 is a coffee'urnof'ordinary con--r struction havinga coffee-receptacle 2, within which is arranged a straining-sack 3. A stone cover 4 is provided for receptacle 2, and an outer cover 5 is arranged over t-he'outer casing 1. Anoutlet-pipe 6 extends laterally from the u rn and is adapted to conveycoii'ee from rccep# tacle 2 to a faucet 7, located at the outer end of pipe 6. A glass gage 8 of ordinaryconstruc- PATENT GFFIC.- i i tion extends upward from the pipe 6, and its u pper end projects into th'e lower end of a. pumpeasing9. Alongitudinally-extendingpassage 10 is arranged within this casing, and at opposit/e sides ot' this passage are ci rcular pistonchambers 11, in which are mounted meshing rotary pistons 12, said pistons fitting snugly within the chambers 11. One of the pistons is loosely' mounted upon a shaft 13, while the` other is secured in any suitable manner to a shaft 14.- A large gear is loosely mounted on the shaft 13 and has acrank 16 extending therefrom, v yhereby itmay be readily rotated. Gear 15 meshes with asmaller' gear 17, which is se- Y cured in any suitable manner to the shaft 14,

and it will therefore be obvious that when gear 15 is rotated the piston secured to the shaft 14 will he rapidly revolved and will cause the other piston to rotate therewith. The upper end of passage 10 is'normally closed by a screw-plug 18, and a tube 19 extends laterally from and is detachably secured within the casing at a point above the pistons and communicates with the passage 10. This tube is adapted to be fastened in any suitable man` ner to the urn, and a pipe 20 is detachably secured within the end of tube 19 and projects through the s tone`cover 4 to aV point within thestrainig-sack. A thumb-screw 21 is arranged within the casing 9 at a, point below the rotary pistons 12 and has an L-shaped the urn, as ordinarily, the crank 16 is.

passage 22 therein, which communicates with said paage 10. .Vhen the screw 21 is turned in one direction, the outer end of this passage becomes exposed, and air is then free to pass therethrough into or out of the passage 10.

Ater coffee and water' have been placed rotated soas to impart rotary motion to the pistons 12 in the directions of the arrows showninfg. This will cause the liquid tobedrawn upward through' the gage 8 and around withinv me circular chambers 1'1 and up through the mbe 19 vand pipe :20. This circulation of the @snee will continue as long as the pistons are rmtated.V After the operation has been com* pieted the thumb-screw 21 may be rotated so es to expose the outer end of passage 22 therein,

and air is'thus permitted to` pass therethrough Patent, s l l- In combination with an urn and itsgage,

'from and into the urn through said gage, and

an airvent connected with the pump to be opened when said pump 1s not 1n use to cause the liquid to return to its level.

:2. In combination with an urn and its gage,

Va removable pump-casing at one enfi'of the gage, a channel between the casing and the urn and a pump within the casing whereby 'a continuous tiow'of liquid is drawn from.y the urnv and through the channel by way of said gage..

3. In combination with an urn and its gag-e, a removable pumpcasing at one end of the gage,a channel between thecasing and theurn, a pump within said casing whereby a continuous circuit of liquid may be drawn from and into the urn byv way of the vchannel throughthe gage, and an airvent connected to said pump-casing tobe opened when the pump is not in use thereby causing the liquid to return t0 its level.

In testimony whereof I ailix my signature in presence of two witnesses. I Y

i BERT PETERMAN. Witnesses:

E. G. Eisenman, L A. SMITH. 

